Newtype Support Concept

newtype_concept.rs

// Type Alias Definition
type CharVec = Vec<char>;

// Impl Trait for Alias
impl ToString for CharVec {
  fn to_string(&self) -> String {
    String::from_iter(self)
  }
}

fn foo<T: ToString>(bar: T) {
  println!("My String {:}", bar.to_string());
}

fn main() {
  
  let sample = vec!['h','e','l','l','o'];
  // Compiles
  foo(sample as CharVec);
  // Does not Compile
  foo(sample);
  
}